Remarks1953-1955patented double-excenter winding with jewelled rollers (for low height)jewel-bearing rotorAn intermediate wheel between minute pinion and the rest of the train allows big balance and low profile without reducing the sturdiness (cf. Cyma 10 Pleiade).Moreover this layout allows to place the seconds wheel either in the center or for a sub second, without further modifications (details cf. Cyma 488.2).early samples pink gold plated (Fig. 4)late samples with new rotor lock and ring balance (Fig. 5)